Desenvolvimento de um sistema para medição do nível de água a distância utilizando o protocolo LoRawan para estudo da viabilidade de monitoramentos dos níveis dos igarapé

Abstract

The purpose of this document is to present the development of a water level monitoring system that can be applied to supervise streams where there is a risk of flooding. This system has the ability to send long distance messages with low power consumption according to the LPWAN standard. The system is prototyped and data transmission is performed via LoRaWan devices. Firstly, we show the theoretical foundation of the technologies used in this project: Level measurement, LoRaWan technology, LoRa configuration parameters, Ultrasonic sensor, Arduino IDE and LabVIEW. Then, in Methods and Materials, are presented the stages of development of the project and the materials used. Later, in Project Implementation, there is an exposition of what was performed during the project. At this stage, are presented the flowcharts of the programs developed in the Arduino IDE for the performance of the tests. Distance testing with packet sending was performed using LoRa technology. Then the prototype was implemented to simulate the increase of water levels. At this stage, power consumption tests were also performed on the devices used to measure the level. And later is presented the development of the graphical interface for visualization of these levels. Then, in the Obtained Results, the data obtained from the tests are shown and analyzed. Finally, it is concluded from the data obtained that LoRaWan technology is a viable alternative for remote monitoring of stream levels at flood risk sites. The results showed good performance in sending messages at distances of more than 4 km or 2,8 miles and maximum current consumption of 186 mA at the time of transmission.